[mond]

my windows xp running on a toshiba A30-921 laptop just shuts itself down whenever it feels like it regardless of wether I am surfing the net or anything else. I have F-Secure and Xoft spy but I can not get the anti virus to finish scanning before pc shuts itself down. After shutdown I generally have to wait a while before it will start up properly. The anti spyware / anti virus never seem to find anything but often it is cut short. I also have a trial version of "tune up utilities" and "clean up" installed which I run on a regular basis.
any suggestions welcome. thanks in advance.

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Virus scans which do not complete can be malware related

Please go here:

Malware Removal Guide

Run all the programmes as advised then post a current Hijack This Log in a new topic in the Malware Forum

For the purpose of accurate malware analysis, Hijack This Logs are only dealt with in the Malware Forum. Posting them anywhere else will result in a delayed response

If you are unable to run any of the programmes, ask for advice in the Malware Forum

[Retired Tech]

Virus scans which do not complete can be malware related

Please go here:

Malware Removal Guide

Run all the programmes as advised then post a current Hijack This Log in a new topic in the Malware Forum

For the purpose of accurate malware analysis, Hijack This Logs are only dealt with in the Malware Forum. Posting them anywhere else will result in a delayed response

If you are unable to run any of the programmes, ask for advice in the Malware Forum

[WinCrazy]

Sudden, random shutdowns can also be caused by the CPU getting too hot of the system memory failing

To view the tempeature run either Aida 32 or Everest Home (both free).

The best memory test around is MemTest86. You will need to create either a boot floppy or burn an ISO disc image file to a CD, depending on which flavor you download. For either version be sure to check that in your BIOS the CD and the floppy drive tries to booted from before the hard drive is tried.